JP2008272907A - Toolbox for metal roofing work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toolbox for metal roofing work capable of stably being placed on a roof covered with sheet steel and of easily being carried and handled. <P>SOLUTION: This toolbox for metal roofing work has a double bottom structure including an inner bottom plate and an outer bottom plate on the bottom part. The inner bottom plate is mounted in parallel with the upper aperture face of the toolbox. The outer bottom plate made of a low-permeability material is inclined so as to form a predetermined angle with the inner bottom plate. A permanent magnet is fixed on the upper surface of the outer bottom plate so as to head toward such a direction that the magnetic flux penetrates the outer bottom plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is for a metal roof construction for placing tools and small building materials on a sloped roof when working on a roof covered with a metal roof material based on a steel plate. It relates to a tool box.

  In the work of finishing the roof, which is one of the main structural parts of the house, with roofing materials, various tools and small building materials are required. Such tools, small building materials, etc. are usually carried in a tool box. It is desirable that the tool box be always beside the worker during work. However, since the roof is generally inclined, there is a risk of slipping if the tool box is placed directly on the roof. In order to avoid this, it has been carried out on a flat scaffold that is far from the work place or placed on the scaffold, which is one of the causes of lowering work efficiency.

  In order to solve these problems, various tool boxes for roof construction that can be placed on a sloped roof have been proposed. For example, Patent Document 1 discloses a roof tool box 50 as shown in FIG. The tool box 50 includes a tool box main body 51, a mounting table 52 that is rotatably attached to a lower end portion of the tool box 50 and mounts building materials and the like, and is provided above the mounting table 52 and is attached to the roof structure member 54. It is comprised from the latching | locking part 53 to latch. The mounting table 52 can be stored in the tool box body 51. However, in the case of this roof tool box 50, an appropriate roof structure member 54 for locking the locking portion 53 is required, but such a roof structure member 54 is not always present on the roof. Moreover, even if it exists, it is necessary to move the mounting table 52 every time the tool box is moved, and there is a problem in convenience.

Patent Document 2 discloses a tool box 60 as shown in FIG. In the tool box 60, a triangular plate 62 having a bottom side substantially matching the front plate of the box body and a bottom side of the box body is attached to both side surfaces of the box-shaped tool box body 61. The tool box body 61 is supported in the vicinity of the corner facing the oblique side, and a holding rod 63 is attached between the bottom sides of the two triangular plates 62. However, since the tool box 60 is only slip-prevented by the friction between the bottom of the triangular plate 62 and the holding rod 63 and the roof surface, the tool box 60 slides down on a roof with a steep inclination angle. There is a risk.
Japanese Patent Laid-Open No. 11-245181 Japanese Utility Model Publication No. 62-5906

  The present invention has been made to solve such problems of the prior art, and the problem is that tools and small building materials are used when working on a roof covered with a metal roof material based on a steel plate. It is an object of the present invention to provide a tool box for metal roof construction that can be stored and stably placed on an inclined roof and is easy to carry and handle.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a method for storing tools, small building materials, etc. on a roof when working on an inclined roof covered with a metal roof material based on a steel plate. A tool box for metal roof construction that is placed on the base, and the bottom is formed in a double bottom structure consisting of an inner bottom plate and an outer bottom plate, and the inner bottom plate is attached in parallel to the upper opening surface of the tool box. Yes, the outer bottom plate is attached using a material with low permeability so that its surface is inclined at a predetermined angle with the inner bottom plate, and a permanent magnet directs the magnetic flux on the upper surface in a direction penetrating the outer bottom plate. It is the tool box for metal roof construction characterized by being attached in this way.

  In the tool box having such a configuration, since the permanent magnet attached to the outer bottom plate attracts the steel plate of the inclined roof, the frictional force between the outer bottom plate and the inclined roof surface is increased to prevent the tool box from sliding down. . For this reason, it becomes possible to place the tool box on the inclined roof beside the worker, and the convenience of the roof work is improved. Further, since the outer bottom plate is attached to be inclined with respect to the inner bottom plate, the opening of the tool box becomes almost horizontal when placed on an inclined roof. Therefore, storage and removal of tools, small building materials, etc. are facilitated. Moreover, since the magnet is attached to the upper surface of the outer bottom plate, even if iron powder, iron scraps or the like are scattered on the roof, they do not adhere to the magnet.

  In the invention according to claim 2, when working on an inclined roof covered with a metal roof material based on a steel plate, tools, small building materials, etc. are stored and placed on the roof. A tool box for metal roof construction, which has a bottom formed in a double bottom structure consisting of an inner bottom plate and an outer bottom plate, and the inner bottom plate is made of a material with high permeability and is parallel to the upper opening surface of the tool box The outer bottom plate is attached using a material with low permeability so that its surface is inclined with respect to the inner bottom plate at a predetermined angle, and the permanent magnets are vertically moved between the inner bottom plate and the outer bottom plate. When it is moved upward, it is magnetically attached to the lower surface of the inner bottom plate, and when it is moved downward, there is a material with high magnetic permeability below the outer bottom plate. For metal roof construction characterized by being attached so as to be magnetically attached to the material It is a tool box.

  According to such a structure, when carrying a tool box, a magnet can be moved up and magnetically attached to the inner bottom plate lower surface. Moreover, when mounting on an inclined roof, after mounting, a magnet can be moved on an outer baseplate, and it can be made to adhere to a roof through an outer baseplate, and a tool box can be prevented from sliding down. When the tool box is lifted from the roof, the magnet is moved upward with the tool box placed on the roof to finish the suction of the roof by the magnet, and then the tool box is lifted. In this way, when the roof is attracted by the magnet, the roof can be pressed with the outer bottom plate, so that the roof plate is not deformed by the magnet's attracting force. Further, when the tool box is lifted, no attractive force acts between the magnet and the roof, so that the tool box can be lifted with a force corresponding to the weight of the tool box. Therefore, the workability of changing the placement location of the tool box is improved.

  Further, the invention according to claim 3 is the tool box for metal roof construction according to claim 1 or 2, wherein the permanent magnet attached to the outer bottom plate is in a direction in which the interval between the inner bottom plate and the outer bottom plate is narrowed. It is a tool box for metal roof construction characterized by being attached near.

  With such a configuration, the rotational moment in the direction of preventing the tool box from falling is increased, so that the tool box can be more effectively prevented from falling.

  The invention according to claim 4 is the metal roof construction tool box according to any one of claims 1 to 3, wherein a predetermined angle formed by the inner bottom plate and the outer bottom plate is 5 to 30 degrees. This is a tool box for metal roof construction.

  The inclination angle of the roof of ordinary houses is often 5 to 30 degrees. Therefore, if the inclination angle between the inner bottom plate and the outer bottom plate of the tool box is set to 5 to 30 degrees, it is possible to prevent the tool box from sliding down and falling over most of the inclined roofs, coupled with the roof suction effect by the magnet. Workability of construction can be improved.

  The invention according to claim 5 is the metal roof construction tool box according to claim 1, wherein the outer bottom plate is attached in parallel to the inner bottom plate without being inclined. It is a tool box for metal roof construction.

  Even when the outer bottom plate is not inclined as described above, when the inclination angle of the roof is small, the magnet attached to the outer bottom plate attracts the steel plate roof, thereby preventing the tool box from sliding down and falling. .

  In the invention according to claim 6, when working on an inclined roof covered with a metal roof material based on a steel plate, tools and small building materials are stored and placed on the roof. A metal roof construction tool box, wherein a permanent magnet is attached to the lower surface of the bottom plate of the tool box so that the magnetic flux is directed downward of the bottom plate. It is.

  Even in such a configuration, when the inclination angle of the roof is small, the magnet attached to the bottom plate attracts the steel plate roof, and the tool box is prevented from sliding and falling.

  A seventh aspect of the present invention is the metal roof construction tool box according to the fifth or sixth aspect, wherein the permanent magnet is attached in one direction toward the bottom plate. It is a tool box for construction.

  If a magnet is attached at such a position and the tool box is placed so that the magnet is positioned on the upper side of the roof, the tool box can be prevented from falling more effectively than when it is attached to the center of the plate.

Hereinafter, the structural example of the tool box for metal roof construction which concerns on this invention is divided into embodiment, and is demonstrated.
(First embodiment)
The tool box 1 of this embodiment is intended to store tools, small building materials, etc. during work on an inclined roof and place them beside the worker. It is assumed that it is wiped with a metal roof material as a base. The roof material based on a steel plate is, for example, a coated hot-dip galvanized steel plate, a coated galvalume steel plate (aluminum / zinc alloy-plated steel plate), etc., and has a high magnetic permeability and is attracted to a magnet.

  In FIG. 1, the tool box 1 for metal roof construction of this embodiment is shown with a perspective view. FIG. 2 is a side view of a part of the tool box 1 in cross section. The tool box 1 is composed of a tool box body 2 and a lid 3. The tool box main body 2 is formed in a box shape, and a lid 3 for opening and closing the opening is attached to the upper portion of the tool box main body 2 using a hinge 5. Further, the lid 3 can be locked by the snap lock type connector 6 with the upper opening of the tool box body 2 closed. A hanging handle 7 is attached to the upper surface of the lid 3.

  The tool box body 2 has a double bottom structure in which the bottom part is composed of an inner bottom plate 8 and an outer bottom plate 9. The inner bottom plate 8 is attached in parallel to the upper opening surface of the tool box body 2. A space surrounded by the inner bottom plate 8 and the side plate 10 is used as a space for storing tools and small building materials.

  The outer bottom plate 9 is attached to the lower side of the inner bottom plate 8 so that the surface thereof is inclined with respect to the inner bottom plate 8 at an angle of 5 to 30 degrees. A material with low magnetic permeability is used for the outer bottom plate 9. Examples of the material having low magnetic permeability include aluminum, copper, and a synthetic resin material. The inner bottom plate 8 can be made of any material as long as it has strength.

  A permanent magnet 12 is attached to the upper surface at the center of the outer bottom plate 9 using a fixed plate 13. It is preferable to use a material having a low magnetic permeability for the fixing plate 13. The permanent magnet 12 is magnetized so that the generated magnetic flux penetrates the outer bottom plate 9 almost vertically, for example, so that the surface side in contact with the outer bottom plate 9 is an N pole and the opposite side surface is an S pole.

  The tool box 1 shown in FIGS. 1 and 2 is a tool box in which the angle between the inner bottom plate 8 and the outer bottom plate 9 is 15 degrees as an example. When the tool box 1 is placed on a roof 20 inclined at 15 degrees, the inner bottom plate 8 is horizontal and the side plate 10 is vertical as shown in FIG. Since the roof 20 is inclined, the tool box 1 tries to slide down. In this case, the force acting on the tool box 1 is as shown in the vector diagram of FIG. At the center of gravity 21 of the tool box 1, gravity W proportional to the mass of the tool box 1 and the tools housed therein acts vertically downward. The gravity W can be considered by being decomposed into a roof surface vertical direction component Wv that presses the surface of the roof 20 vertically and a roof surface parallel direction component Wh that is slid along the surface of the roof 20.

On the other hand, a frictional force Ff acts between the lower surface of the outer bottom plate 9 of the tool box 1 and the surface of the roof 20. The frictional force Ff acts in a direction in which the tool box 1 is pushed up along the surface of the roof 20 (a direction in which the tool box 1 is prevented from sliding down). The magnitude of the frictional force Ff is a value obtained by multiplying the force F by which the outer bottom plate 9 of the tool box 1 presses the surface of the roof 20 vertically by the friction coefficient μ between the lower surface of the outer bottom plate 9 and the surface of the roof 20. is there. When the magnet 12 is not present, the friction force Ff is
Ff = μ · F = μ · Wv (1)

In the tool box 1 of the present embodiment, a magnet 12 is attached to the upper surface of the outer bottom plate 9. The magnet 12 attracts the roof 20 when it is covered with a roof material based on a steel plate having a high magnetic permeability. As the reaction force, the magnet 12 presses the roof 20 with the same force. This force is defined as a suction force Fm. The suction force Fm acts in the direction in which the surface of the roof 20 is pressed vertically, that is, in the same direction as the roof surface vertical direction component Wv of gravity W. Accordingly, the frictional force Ff when the magnet 12 is present is as follows.
Ff = μ · F = μ · (Wv + Fm) (2) As is clear from the comparison with the equation (1), the magnet 12 increases the frictional force Ff by (μ · Fm), thereby causing the tool box 1 to slide down. Increase the blocking force Ff.

When the tool box 1 is stationary without slipping, the frictional force Ff is equal to the roof surface parallel direction component Wh of gravity W, and the following relationship is established.
Wh = Ff = μ · (Wv + Fm) (3) Formula The friction coefficient μ in a state where the tool box 1 is stationary without slipping is a value satisfying the formula (3).

  When the inclination angle of the roof 20 is θ, the roof surface parallel direction component Wh on the left side of the expression (3), which is a force for sliding the tool box 1 down, is calculated by (W · sin θ). The value increases as the tilt angle θ increases. Conversely, since the roof surface vertical direction component Wv is calculated by (W · cos θ), the frictional force (μ · Wv) due to gravity W on the right side of the equation (3) decreases as the inclination angle θ increases. Therefore, the tool box 1 is easily slipped off as the inclination angle θ increases. The frictional force (μ · Fm) due to the attractive force Fm of the magnet 12 compensates for the reduction of the frictional force and functions to prevent the tool box 1 from sliding down. Thus, in the tool box 1 of this embodiment which attached the magnet 12 to the outer bottom board 9, sliding down is prevented effectively.

  The above is a description of the force relationship for preventing sliding, but the tool box 1 also has a force to fall down on the roof 20. FIG. 4 is a diagram for explaining the relationship between forces that try to cause the tool box 1 to fall. When the tool box 1 is stationary, a rotational moment for rotating the tool box 1 clockwise around the lower end (hereinafter referred to as the rotation center) 23 of the outer bottom plate 9 and Counterclockwise rotation moment that prevents

  The rotational moment to be rotated clockwise is due to the roof surface parallel direction component Wh of gravity W. If the distance between the center of gravity 21 of the tool box 1 and the rotation center 23 drawn in parallel to the surface of the roof 20 is Lh, the clockwise rotation moment is calculated as (Wh · Lh). On the other hand, the counterclockwise rotational moment includes a component due to the roof surface vertical component Wv of gravity W and a component due to the attractive force Fm of the magnet 12. When the distance between a line drawn perpendicularly to the surface of the roof 20 from the center of gravity 21 of the tool box 1 and the rotation center 23 is Lv, the counterclockwise rotation moment due to Wv is (Wv · Lv). When the distance between the center perpendicular to the surface of the roof 20 and the rotation center 23 from the center point where the attractive force Fm of the magnet 12 works is Lm, the counterclockwise rotational moment due to the attractive force Fm is (Fm · Lm).

From these things, the conditions for the tool box 1 to rotate clockwise and not to fall are as follows.
Wh · Lh <Wv · Lv + Fm · Lm (4) When the inclination angle of the roof 20 is θ, Wh and Wv are represented by (W · sin θ) and (W · cos θ), respectively. Therefore, the equation (4) is as follows.
W · sin θ · Lh <W · cos θ · Lv + Fm · Lm (5) When the inclination angle θ increases, the value on the left side of equation (5) increases and the value of the first term on the right side decreases. Therefore, the tool box 1 is likely to fall when the inclination angle θ increases.

  The counterclockwise rotation moment (Fm · Lm) due to the suction force Fm acts in a direction to prevent the overturn. The value increases in proportion to the distance Lm when the value of the suction force Fm is constant. From this, it can be seen that the magnet 12 is more effective in preventing falling if it is attached to a place where the distance Lm is large. From such an idea, the tool box 1a shown in FIG. 5 has the magnet 12 attached at a position where the value of the distance Lm increases. The position where the value of the distance Lm increases is a position where the distance between the inner bottom plate 8 and the outer bottom plate 9 is reduced. If the magnet 12 is attached to such a position, the effect of preventing the tool box 1a from falling can be enhanced even if the attractive force Fm is the same.

  In the tool box 1 of the present embodiment, a material having a low magnetic permeability is used for the outer bottom plate 9. This is because most of the magnetic flux emitted from the magnet 12 is incident on the surface of the roof 20 perpendicularly. The attractive force Fm of the roof 20 by the magnet 12 is proportional to the square of the magnetic flux density of the magnetic flux that is perpendicularly incident on the surface of the roof 20. When a material with low permeability is used for the outer bottom plate 9, most of the magnetic flux emitted from the magnet 12 is incident perpendicularly to the surface of the roof 20 as shown in FIG. 6 (FIG. 6 shows the permeability of the inner bottom plate 8). It is assumed that the magnetic susceptibility is low.) On the other hand, when a material having a high magnetic permeability is used for the outer bottom plate 9, a considerable part of the magnetic flux emitted from the magnet 12 moves horizontally in the outer bottom plate 9 with the magnetic permeability as shown in FIG. And return to the opposite pole of the magnet 12 without entering the surface of the roof 20. For this reason, the magnet 12 only attracts the outer bottom plate 9 strongly, and the attractive force Fm attracting the roof 20 is weakened. For these reasons, it is preferable to use a material with low magnetic permeability for the outer bottom plate 9. Moreover, it is preferable to make the thickness as thin as possible. The outer bottom plate 9 also exhibits an effect of preventing the iron powder scattered on the roof 20 from being magnetically attached to the magnet 12.

  The tool box 1 shown in FIG. 2 is a tool box in which the inclination angle between the inner bottom plate 8 and the outer bottom plate 9 is 15 degrees. When this is placed on a roof having an inclination angle of 10 degrees, it is slightly inclined as shown in (1) of FIG. When placed on a roof with an inclination angle of 20 degrees, as shown in (2) of FIG. 8, the state is slightly inclined to the side opposite to (1) of FIG. When placed on a horizontal plane, it becomes as shown in FIG. However, in any case, since the inclination of the tool box 1 is small, it is considered that there are few inconveniences in working.

  The inclination angle of the roof of ordinary houses is often about 5 to 30 degrees. Therefore, if the inclination angle between the inner bottom plate 8 and the outer bottom plate 9 of the tool box 1 is set to 5 to 30 degrees, it can correspond to most inclined roofs. However, the tool box intended to be used on a sloping roof having an inclination angle of 5 to 10 degrees may be configured such that the outer bottom plate 9 is attached in parallel to the inner bottom plate 8. FIG. 9 is a side view of a cross section of a part of the tool box 1b having such a configuration. Also in this case, it is preferable that the magnet 12 is attached not to the center on the outer bottom plate 9 but to the side determined to be positioned above the roof 20. Furthermore, a tool box intended to be used on such a gently-sloped roof may be configured such that the magnet 12 is attached to the lower side of the inner bottom plate 8 without the outer bottom plate 9. FIG. 10 is a side view showing a cross section of a part of the tool box 1c having such a configuration. In this case, the inner bottom plate 8 becomes the bottom plate. As the magnet 12, it is preferable to use a magnet whose surface is coated with a thin resin layer so that the attached magnetic powder can be easily removed.

(Second Embodiment)
The tool box of the present embodiment is configured such that the magnet is not fixed on the outer bottom plate but manually moved up and down. FIG. 11 is a perspective view of the tool box 30 and is drawn through the side plate 10. FIGS. 12 and 13 are side views in which a part of the tool box 30 is sectioned. FIG. 12 shows a state where the magnet 12 is moved upward, and FIG. 13 shows a state where the magnet 12 is moved downward. .

  As a usage, when the tool box 30 is carried, the magnet 12 is moved upward and magnetized to the lower surface of the inner bottom plate 8 as shown in FIG. When the tool box 30 is placed on the roof 20, the magnet 12 is moved onto the outer bottom plate 9 as shown in FIG. 13 and is magnetically attached to the roof 20 to prevent the tool box 30 from sliding and falling.

  In order to effectively prevent the tool box from sliding off, it is necessary to use a permanent magnet having a strong magnetic attraction. In the case of the tool box 1 described above, if the attractive force of the magnet 12 is strong, a large upward force acts on the steel plate on the upper surface of the roof 20 when the tool box is lifted from the roof 20. If this suction force is too large, the steel sheet may be deformed. Moreover, even if it does not deform | transform, in order to lift the tool box 1, the force which added the suction force to the weight of the tool box 1 is required. If a large force is required for lifting, workability is poor. Therefore, in the tool box 30 of the present embodiment, when the tool box 30 is lifted from the roof 20, the tool box 30 is not moved and only the attraction of the roof 20 by the magnet 12 is ended first. Next, the tool box 30 that has lost the suction force is lifted. By enabling such an operation, the steel plate of the roof 20 can be lifted with a force corresponding to the weight of the tool box 30 without being deformed.

  A material having a high magnetic permeability is used for the inner bottom plate 8 of the tool box 30, and a material having a low magnetic permeability is used for the outer bottom plate 9. The magnet 12 is fixed to a mounting plate 32 that rotates up and down around a hinge 31. The upper and lower surfaces of the magnet 12 are open. A part of the mounting plate 32 on the side opposite to the hinge 31 is projected to the outside of the tool box 30 through an opening 33 provided in the side plate 10. A handle 34 is attached to the protruding portion. The magnet 12 can be moved up and down by manually moving the handle 34 up and down.

  When the tool box 30 is carried on the roof 20, the handle 34 is moved upward to move the magnet 12 upward. The magnet 12 is magnetically attached to the lower surface of the inner bottom plate 8 and maintains its state even when the handle 34 is released. In this state, the tool box 30 is lifted and carried on the roof 20 and placed. After the placement, the handle 34 is moved downward to move the magnet 12 onto the outer bottom plate 9. The magnet 12 is magnetically attached to the roof 20 through the outer bottom plate 9, and the tool box 30 is fixed in place.

  When lifting the tool box 30 placed on the roof 20, first, the lid 3 of the tool box 30 is pressed from above, and the roof 20 is pressed by the side plate 10 and the outer bottom plate 9 of the tool box 30. In this state, the handle 34 is moved upward to move the magnet 12 upward and magnetically adhere to the lower surface of the inner bottom plate 8. In this state, the gap between the magnet 12 and the roof 20 is opened, and the attractive force of the roof 20 by the magnet 12 is reduced. In this state, the tool box 30 is lifted. Since the attractive force of the roof 20 by the magnet 12 is weakened, the magnet 12 can be lifted with a force corresponding to the weight of the tool box 30.

  In this way, when the roof 20 is attracted by the magnet 12, the roof 20 is pressed by the inner bottom plate 8, so that the roof 20 is not deformed by the attracting force of the magnet 12. Further, the tool box 30 can be lifted with a force corresponding to the weight of the tool box 30. Therefore, the workability of changing the placement location of the tool box 30 is improved.

  In this embodiment as well, as described with reference to FIG. 5, the magnet 12 may be attached to a position that is upward when the tool box 1 is placed on the roof 20. By doing so, the tool box 1 can be more effectively prevented from falling.

1 is a perspective view of a tool box 1 according to a first embodiment. It is the side view which made some cross sections of the tool box 1 which concerns on 1st Embodiment. It is explanatory drawing of the relationship of the force which is going to slide down the tool box 1 mounted on the inclined roof. It is explanatory drawing of the relationship of the force which is going to fall the tool box 1 mounted on the inclined roof. It is explanatory drawing of the attachment position of the magnet 12 effective in preventing the tool box 1 from falling. It is explanatory drawing of the magnetic flux path | route at the time of using a material with low magnetic permeability for the outer bottom board 9. FIG. It is explanatory drawing of the magnetic flux path | route at the time of using a material with high magnetic permeability for the outer bottom board 9. FIG. It is a figure which shows the state at the time of placing the tool box 1 which made the angle of the inner bottom board 8 and the outer bottom board 9 15 degrees on the roof of various inclination angles. This is a tool box in which the outer bottom surface 9 is attached in parallel with the inner bottom surface 8. This is a tool box in which the magnet 12 is attached to the lower surface of the inner bottom surface 8. It is a perspective view of the tool box 30 which concerns on 2nd Embodiment. FIG. 6 is a side view of a state in which a magnet 12 is moved upward and is magnetically attached to the lower surface of the inner bottom plate 8. It is a side view of the state which moved the magnet 12 below and was magnetically attached to the roof through the outer bottom plate 9. It is an example of the tool box for inclined roofs which concerns on a prior art. It is another example of the tool box for inclined roofs concerning a prior art.

Explanation of symbols

  In the drawings, 1, 1 a, 1 b, 1 c, 30 are tool boxes, 2 is a tool box body, 8 is an inner bottom plate, 9 is an outer bottom plate, 10 is a side plate, 12 is a permanent magnet, 13 is a fixed plate, 20 is inclined A roof 32 indicates a mounting plate.

Claims (7)

It is a tool box for metal roof construction where tools and small building materials are stored and placed on the roof when working on an inclined roof covered with a metal roofing material based on steel plate. ,
The bottom is formed into a double bottom structure consisting of an inner bottom plate and an outer bottom plate,
The inner bottom plate is attached in parallel to the upper opening surface of the tool box,
The outer bottom plate is made of a material having a low magnetic permeability, and its surface is inclined so as to form a predetermined angle with the inner bottom plate, and a permanent magnet is directed on the upper surface in a direction to penetrate the outer bottom plate. Tool box for metal roof construction, characterized in that it is mounted so that it can be moved. It is a tool box for metal roof construction where tools and small building materials are stored and placed on the roof when working on an inclined roof covered with a metal roofing material based on steel plate. ,
The bottom is formed in a double bottom structure consisting of an inner bottom plate and an outer bottom plate,
The inner bottom plate is made of a material having a high magnetic permeability, and is attached in parallel to the upper opening surface of the tool box,
The outer bottom plate is made of a material having a low magnetic permeability, and its surface is attached so as to be inclined with respect to the inner bottom plate,
A permanent magnet is movable up and down between the inner bottom plate and the outer bottom plate. When the permanent magnet is moved upward, it is magnetically attached to the lower surface of the inner bottom plate and when moved downward, the outer magnet A tool box for metal roof construction, wherein a material having high permeability exists below the bottom plate and is attached so as to be magnetically attached to the material with the outer bottom plate interposed therebetween.   The tool box for metal roof construction according to claim 1 or 2, wherein the predetermined angle is 5 to 30 degrees.   The tool box for metal roof construction according to any one of claims 1 to 3, wherein the permanent magnet is attached in a direction in which a distance between the inner bottom plate and the outer bottom plate is narrowed. Tool box for metal roof construction.   The tool box for metal roof construction according to claim 1, wherein the outer bottom plate is attached in parallel to the inner bottom plate without being inclined. It is a tool box for metal roof construction where tools and small building materials are stored and placed on the roof when working on an inclined roof covered with a metal roofing material based on steel plate. ,
A tool box for metal roof construction, wherein a permanent magnet is attached to the lower surface of the bottom plate of the tool box so that the magnetic flux is directed downward of the bottom plate.   The metal roof construction tool box according to claim 5 or 6, wherein the permanent magnet is attached to a bottom plate in one direction.